/* === VimaPIX - Design System Premium === */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* CSS Custom Properties */
:root {
    /* Dark theme colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.8);
    --bg-card-hover: rgba(17, 24, 39, 0.95);
    --bg-input: rgba(30, 41, 59, 0.6);
    --bg-input-focus: rgba(30, 41, 59, 0.9);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-label: #cbd5e1;

    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;

    --border: rgba(148, 163, 184, 0.1);
    --border-focus: rgba(99, 102, 241, 0.5);

    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px var(--accent-glow);

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Body */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(167, 139, 250, 0.04) 0%, transparent 50%);
    z-index: 0;
    pointer-events: none;
}

/* Main Layout */
.app-container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2.5rem;
    animation: fadeInDown 0.6s ease-out;
}

.header__logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.header__icon {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-glow);
}

.header__title {
    font-size: 2.25rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.header__subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
}

/* Main Content Grid */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    flex: 1;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: var(--transition);
    animation: fadeInUp 0.6s ease-out;
}

.card:hover {
    border-color: var(--border-focus);
    box-shadow: var(--shadow-glow);
}

.card__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card__title-icon {
    font-size: 1.25rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-label);
    margin-bottom: 0.4rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.form-input,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:focus,
.form-select:focus {
    border-color: var(--border-focus);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input.input-error {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-input.input-success {
    border-color: var(--success);
}

.form-error {
    font-size: 0.75rem;
    color: var(--error);
    margin-top: 0.25rem;
    display: none;
    animation: fadeIn 0.2s ease;
}

.form-error.visible {
    display: block;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.25rem;
    padding-right: 2.5rem;
}

.form-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Row layout */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    outline: none;
}

.btn-primary {
    width: 100%;
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-primary .spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-primary.loading .spinner {
    display: inline-block;
}

.btn-primary.loading .btn-text {
    display: none;
}

.btn-secondary {
    background: var(--glass);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-focus);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn-group {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.btn-group .btn {
    flex: 1;
}

/* Result Area */
.result-area {
    display: none;
    animation: fadeInUp 0.4s ease-out;
}

.result-area.visible {
    display: block;
}

.qr-container {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
}

.qr-container img,
.qr-container svg {
    max-width: 280px;
    width: 100%;
    height: auto;
}

.brcode-container {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    position: relative;
    margin-bottom: 1rem;
}

.brcode-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.brcode-text {
    font-family: 'Courier New', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    word-break: break-all;
    line-height: 1.5;
}

.copy-feedback {
    font-size: 0.8rem;
    text-align: center;
    margin-top: 0.5rem;
    height: 1.2rem;
    color: var(--success);
    transition: var(--transition);
}

/* Validate Section */
.validate-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.validate-result {
    display: none;
    margin-top: 1rem;
    animation: fadeIn 0.3s ease;
}

.validate-result.visible {
    display: block;
}

.validate-table {
    width: 100%;
    border-collapse: collapse;
}

.validate-table td {
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--border);
}

.validate-table td:first-child {
    color: var(--text-muted);
    font-weight: 500;
    width: 40%;
}

.validate-table td:last-child {
    color: var(--text-primary);
    word-break: break-all;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-error {
    background: var(--error-bg);
    color: var(--error);
}

/* History Panel */
.history-panel {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.history-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.history-panel__title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.history-panel__clear {
    font-size: 0.7rem;
    color: var(--text-muted);
    cursor: pointer;
    background: none;
    border: none;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
}

.history-panel__clear:hover {
    color: var(--error);
}

.history-list {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
}

.history-list::-webkit-scrollbar {
    width: 4px;
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
}

.history-item:hover {
    background: var(--glass);
}

.history-item__key {
    color: var(--text-primary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
}

.history-item__meta {
    color: var(--text-muted);
    font-size: 0.7rem;
}

.history-empty {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 1rem;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    animation: fadeIn 0.8s ease-out;
}

.footer__text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer__link {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

.footer__link:hover {
    color: var(--accent-hover);
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Responsive */
@media (max-width: 768px) {
    .main-grid {
        grid-template-columns: 1fr;
    }

    .header__title {
        font-size: 1.75rem;
    }

    .card {
        padding: 1.5rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .app-container {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .header__title {
        font-size: 1.5rem;
    }

    .btn-group {
        flex-direction: column;
    }

    .qr-container img,
    .qr-container svg {
        max-width: 220px;
    }
}